Patent US2941109A successfully refreshed from Google Patents.
US2941109A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube having planar electrodes
Assignee: Varian Medical Systems Inc
•
Filing: 1957-10-25
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Granted: 1960-06-14
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Expires: 1977-10-25
Abstract
No abstract record available.
Inventors
- 👤 William H Senior
- 👤 Morraine E Stangl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:41
CPC Classifications
H; H01; H01J; H01J21/00; H01J21/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2367332A
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US2460132A
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US2451557A
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US2459277A
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US2510639A
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US2750535A
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US2640946A
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US2719185A
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US2644907A
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US2782338A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |